/* ========================================
   CONSTRUTOP - DESIGN SYSTEM
   Professional Construction Materials Store
   ======================================== */

/* === RESET & BASE === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Core Colors - Industrial Palette */
    --color-black: #0A0A0A;
    --color-graphite-900: #141414;
    --color-graphite-800: #1C1C1E;
    --color-graphite-700: #252528;
    --color-graphite-600: #323236;
    --color-graphite-500: #48484C;
    --color-graphite-400: #636368;
    --color-graphite-300: #8E8E93;
    --color-graphite-200: #C7C7CC;
    --color-graphite-100: #E5E5EA;
    --color-white: #FFFFFF;

    /* Accent - Construction Orange */
    --color-accent: #E85A1B;
    --color-accent-light: #FF6B2C;
    --color-accent-dark: #C44A12;
    --color-accent-muted: rgba(232, 90, 27, 0.15);

    /* Functional */
    --color-success: #34C759;
    --color-warning: #FFCC00;
    --color-error: #FF3B30;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Weights */
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
    --fw-extrabold: 800;
    --fw-black: 900;

    /* Font Sizes - Desktop */
    --fs-display: clamp(3.5rem, 8vw, 6rem);
    --fs-h1: clamp(2.5rem, 5vw, 4rem);
    --fs-h2: clamp(2rem, 4vw, 3rem);
    --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
    --fs-h4: clamp(1rem, 1.5vw, 1.125rem);
    --fs-body: 1rem;
    --fs-body-lg: 1.125rem;
    --fs-small: 0.875rem;
    --fs-xs: 0.75rem;

    /* Line Heights */
    --lh-tight: 1.1;
    --lh-normal: 1.5;
    --lh-relaxed: 1.7;

    /* Letter Spacing */
    --ls-tight: -0.02em;
    --ls-normal: 0;
    --ls-wide: 0.05em;
    --ls-wider: 0.1em;
    --ls-widest: 0.15em;

    /* Spacing Scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    --space-6xl: 12rem;

    /* Container */
    --container-max: 1400px;
    --container-padding: 2rem;

    /* Transitions */
    --transition-fast: 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --transition-base: 400ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --transition-slow: 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --ease-out-quint: cubic-bezier(0.23, 1, 0.32, 1);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);

    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-toast: 500;
}

html {
    /* Custom JS scrolling used instead of native smooth scroll for better control */
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-body);
    font-weight: var(--fw-regular);
    line-height: var(--lh-normal);
    color: var(--color-white);
    background-color: var(--color-graphite-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* === UTILITY === */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--fw-bold);
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--space-lg) 0;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-md) 0;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-mark {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-mark::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 4px;
    background: var(--color-white);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.logo-mark::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 24px;
    background: var(--color-white);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.logo-text {
    font-size: 1.375rem;
    font-weight: var(--fw-extrabold);
    letter-spacing: var(--ls-wide);
    color: var(--color-white);
}

/* Navigation */
.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    list-style: none;
}

.nav-link {
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wider);
    color: var(--color-graphite-200);
    position: relative;
    padding: var(--space-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-white);
}

.nav-link:hover::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.header-phone {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    color: var(--color-graphite-200);
    transition: color var(--transition-fast);
}

.header-phone:hover {
    color: var(--color-white);
}

.header-phone svg {
    color: var(--color-accent);
}

.btn-header {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-white);
    background: var(--color-accent);
    transition: all var(--transition-fast);
}

.btn-header:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 4px 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* === HERO SECTION === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(10, 10, 10, 0.95) 0%,
            rgba(10, 10, 10, 0.85) 40%,
            rgba(10, 10, 10, 0.6) 100%);
}

.hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-6xl) var(--container-padding) var(--space-4xl);
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-widest);
    color: var(--color-accent);
    background: var(--color-accent-muted);
    border-left: 3px solid var(--color-accent);
    margin-bottom: var(--space-2xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.hero-title {
    font-size: var(--fs-display);
    font-weight: var(--fw-black);
    line-height: 0.95;
    letter-spacing: -0.03em;
    color: var(--color-white);
    margin-bottom: var(--space-2xl);
}

.hero-title-accent {
    color: var(--color-accent);
}

.hero-title-highlight {
    position: relative;
    display: inline-block;
}

.hero-title-highlight::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 0.15em;
    background: var(--color-accent);
    opacity: 0.4;
}

.hero-description {
    font-size: var(--fs-body-lg);
    line-height: var(--lh-relaxed);
    color: var(--color-graphite-300);
    max-width: 600px;
    margin-bottom: var(--space-3xl);
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-4xl);
}

/* Primary Button */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-white);
    background: var(--color-accent);
    transition: all var(--transition-fast);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 90, 27, 0.4);
}

.btn-primary svg {
    transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

/* Secondary Button */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-white);
    background: transparent;
    border: 2px solid var(--color-graphite-500);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    border-color: var(--color-white);
    background: rgba(255, 255, 255, 0.05);
}

/* Outline Button */
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-accent);
    background: transparent;
    border: 2px solid var(--color-accent);
    transition: all var(--transition-fast);
}

.btn-outline:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline svg {
    transition: transform var(--transition-fast);
}

.btn-outline:hover svg {
    transform: translateX(4px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-3xl);
}

.stat-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
}

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: var(--fw-black);
    color: var(--color-white);
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wider);
    color: var(--color-graphite-400);
    line-height: 1.3;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: linear-gradient(180deg, transparent, var(--color-graphite-600), transparent);
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-3xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-graphite-400);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-widest);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, var(--color-graphite-400), transparent);
    position: relative;
}

.scroll-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: var(--color-accent);
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% {
        top: 0;
        opacity: 1;
    }

    100% {
        top: 100%;
        opacity: 0;
    }
}

/* === FEATURES BAR === */
.features-bar {
    background: var(--color-graphite-800);
    border-top: 1px solid var(--color-graphite-700);
    border-bottom: 1px solid var(--color-graphite-700);
    padding: var(--space-2xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-muted);
    color: var(--color-accent);
    flex-shrink: 0;
}

.feature-text strong {
    display: block;
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
    color: var(--color-white);
    margin-bottom: 2px;
}

.feature-text span {
    font-size: var(--fs-xs);
    color: var(--color-graphite-400);
}

/* === SECTION STYLES === */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-4xl);
}

.section-tag {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-widest);
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.section-tag-light {
    color: var(--color-accent-light);
}

.section-title {
    font-size: var(--fs-h2);
    font-weight: var(--fw-black);
    letter-spacing: -0.02em;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.section-title-light {
    color: var(--color-white);
}

.section-subtitle {
    font-size: var(--fs-body-lg);
    color: var(--color-graphite-400);
    line-height: var(--lh-relaxed);
}

/* === CATEGORIES === */
.categories {
    padding: var(--space-6xl) 0;
    background: var(--color-graphite-900);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.category-card {
    position: relative;
    background: var(--color-graphite-800);
    padding: var(--space-2xl);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border: 1px solid var(--color-graphite-700);
    overflow: hidden;
    transition: all var(--transition-base);
}

.category-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.category-large {
    grid-column: span 2;
    min-height: 320px;
}

.category-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    transition: opacity var(--transition-base);
}

.category-card:hover .category-bg {
    opacity: 0.3;
}

.category-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.9) 100%);
}

.category-content {
    position: relative;
    z-index: 2;
}

.category-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
}

.category-card:hover .category-icon {
    background: var(--color-accent-light);
    transform: scale(1.05);
}

.category-title {
    font-size: var(--fs-h4);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.category-description {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    margin-bottom: var(--space-md);
    line-height: var(--lh-relaxed);
}

.category-count {
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-accent);
}

.category-link {
    position: absolute;
    inset: 0;
    z-index: 3;
}

.categories-cta {
    text-align: center;
    margin-top: var(--space-3xl);
}

/* === DIFFERENTIALS === */
.differentials {
    padding: var(--space-6xl) 0;
    background: var(--color-graphite-800);
}

.differentials-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.differentials-content {
    padding-right: var(--space-3xl);
}

.differentials-text {
    font-size: var(--fs-body);
    color: var(--color-graphite-300);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-3xl);
}

.differentials-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.differential-item {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-lg);
    background: var(--color-graphite-700);
    border-left: 3px solid var(--color-accent);
    transition: all var(--transition-fast);
}

.differential-item:hover {
    background: var(--color-graphite-600);
    transform: translateX(4px);
}

.differential-number {
    font-size: var(--fs-h3);
    font-weight: var(--fw-black);
    color: var(--color-accent);
    opacity: 0.6;
}

.differential-info h4 {
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.differential-info p {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    line-height: var(--lh-relaxed);
}

.differentials-image {
    position: relative;
}

.differentials-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.differentials-badge {
    position: absolute;
    bottom: -30px;
    right: 30px;
    background: var(--color-accent);
    padding: var(--space-xl) var(--space-2xl);
    text-align: center;
}

.badge-number {
    display: block;
    font-size: var(--fs-h2);
    font-weight: var(--fw-black);
    color: var(--color-white);
    line-height: 1;
}

.badge-text {
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: rgba(255, 255, 255, 0.8);
}

/* === NUMBERS === */
.numbers {
    padding: var(--space-4xl) 0;
    background: var(--color-black);
    border-top: 1px solid var(--color-graphite-800);
    border-bottom: 1px solid var(--color-graphite-800);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    text-align: center;
}

.number-item {
    padding: var(--space-xl);
}

.number-value {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--fw-black);
    color: var(--color-white);
    display: inline;
    font-variant-numeric: tabular-nums;
}

.number-suffix {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: var(--fw-bold);
    color: var(--color-accent);
    margin-left: 4px;
}

.number-label {
    display: block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-widest);
    color: var(--color-graphite-400);
    margin-top: var(--space-md);
}

/* === PRODUCTS === */
.products {
    padding: var(--space-6xl) 0;
    background: var(--color-graphite-900);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.product-card {
    position: relative;
    background: var(--color-graphite-800);
    border: 1px solid var(--color-graphite-700);
    transition: all var(--transition-base);
}

.product-card:hover {
    border-color: var(--color-graphite-500);
    transform: translateY(-4px);
}

.product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-white);
    background: var(--color-accent);
    z-index: 2;
}

.product-badge-new {
    background: var(--color-success);
}

.product-image {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-graphite-700);
    border-bottom: 1px solid var(--color-graphite-700);
}

.product-placeholder {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-graphite-500);
}

.product-info {
    padding: var(--space-xl);
}

.product-category {
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    display: block;
}

.product-name {
    font-size: var(--fs-body);
    font-weight: var(--fw-bold);
    color: var(--color-white);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.product-brand {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    margin-bottom: var(--space-lg);
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-graphite-700);
}

.product-price {
    font-size: var(--fs-h4);
    font-weight: var(--fw-extrabold);
    color: var(--color-white);
}

.product-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.product-btn:hover {
    background: var(--color-accent-light);
    transform: scale(1.05);
}

/* === CTA SECTION === */
.cta-section {
    padding: var(--space-6xl) 0;
    background: linear-gradient(135deg, var(--color-graphite-800) 0%, var(--color-graphite-900) 100%);
}

.cta-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.cta-title {
    font-size: var(--fs-h2);
    font-weight: var(--fw-black);
    letter-spacing: -0.02em;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.cta-text {
    font-size: var(--fs-body-lg);
    color: var(--color-graphite-300);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-2xl);
}

.cta-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--fs-small);
    color: var(--color-graphite-200);
}

.cta-feature svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

.cta-action {
    text-align: center;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-2xl);
    background: #25D366;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-fast);
}

.whatsapp-btn:hover {
    background: #20BA5C;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.3);
}

.whatsapp-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.whatsapp-text {
    flex: 1;
    text-align: left;
}

.whatsapp-label {
    display: block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    opacity: 0.8;
    margin-bottom: 2px;
}

.whatsapp-title {
    display: block;
    font-size: var(--fs-h3);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
}

.whatsapp-arrow {
    transition: transform var(--transition-fast);
}

.whatsapp-btn:hover .whatsapp-arrow {
    transform: translateX(4px);
}

.cta-phone {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
}

.cta-phone a {
    color: var(--color-white);
    transition: color var(--transition-fast);
}

.cta-phone a:hover {
    color: var(--color-accent);
}

/* === ABOUT === */
.about {
    padding: var(--space-6xl) 0;
    background: var(--color-graphite-800);
}

.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: 550px;
    object-fit: cover;
}

.about-experience {
    position: absolute;
    bottom: -30px;
    left: 30px;
    background: var(--color-accent);
    padding: var(--space-xl) var(--space-2xl);
    text-align: center;
}

.experience-number {
    display: block;
    font-size: var(--fs-display);
    font-weight: var(--fw-black);
    color: var(--color-white);
    line-height: 0.85;
}

.experience-text {
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.3;
}

.about-content {
    padding-left: var(--space-3xl);
}

.about-text {
    font-size: var(--fs-body);
    color: var(--color-graphite-300);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-lg);
}

.about-values {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-graphite-600);
}

.value-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.value-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.value-item span {
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-graphite-200);
}

/* === FOOTER === */
.footer {
    background: var(--color-black);
}

.footer-top {
    padding: var(--space-5xl) 0 var(--space-4xl);
    border-bottom: 1px solid var(--color-graphite-800);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: var(--space-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-xl);
}

.footer-tagline {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-xl);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-graphite-800);
    color: var(--color-graphite-300);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wider);
    color: var(--color-white);
    margin-bottom: var(--space-xl);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-item svg {
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item span {
    font-size: var(--fs-small);
    color: var(--color-graphite-400);
    line-height: 1.5;
}

.footer-bottom {
    padding: var(--space-xl) 0;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-bottom p {
    font-size: var(--fs-small);
    color: var(--color-graphite-500);
}

.footer-legal {
    display: flex;
    gap: var(--space-xl);
}

.footer-legal a {
    font-size: var(--fs-small);
    color: var(--color-graphite-500);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-graphite-200);
}

/* === WHATSAPP FLOAT === */
.whatsapp-float {
    position: fixed;
    bottom: var(--space-2xl);
    right: var(--space-2xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    color: var(--color-white);
    border-radius: 50%;
    z-index: var(--z-fixed);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

.whatsapp-tooltip {
    position: absolute;
    right: calc(100% + 12px);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-white);
    background: var(--color-graphite-700);
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: all var(--transition-fast);
    pointer-events: none;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    transform: translateX(0);
}

/* === RESPONSIVE === */
@media (max-width: 1200px) {
    :root {
        --container-padding: 1.5rem;
    }

    .nav-list {
        gap: var(--space-xl);
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-large {
        grid-column: span 2;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--color-graphite-900);
        padding: var(--space-6xl) var(--space-2xl);
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-graphite-700);
    }

    .nav.active {
        right: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    }

    /* Backdrop blur for mobile menu */
    .nav::before {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(20, 20, 20, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        z-index: -1;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xl);
    }

    .nav-link {
        font-size: var(--fs-h4);
    }

    .nav-toggle {
        display: flex;
    }

    .header-phone {
        display: none;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .differentials-wrapper,
    .cta-wrapper,
    .about-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }

    .differentials-content {
        padding-right: 0;
    }

    .differentials-image {
        order: -1;
    }

    .about-content {
        padding-left: 0;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xl);
    }

    .stat-divider {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-scroll {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .category-large {
        grid-column: span 1;
    }

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .about-values {
        flex-wrap: wrap;
        gap: var(--space-xl);
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {

    .btn-primary,
    .btn-secondary,
    .btn-outline {
        width: 100%;
        justify-content: center;
    }

    .whatsapp-btn {
        flex-direction: column;
        text-align: center;
    }

    .whatsapp-text {
        text-align: center;
    }

    .whatsapp-arrow {
        display: none;
    }

    .numbers-grid {
        grid-template-columns: 1fr;
    }

    .about-experience,
    .differentials-badge {
        position: relative;
        bottom: 0;
        left: 0;
        right: 0;
        margin-top: calc(-1 * var(--space-2xl));
    }
}

/* === ANIMATIONS: SMOOTH RISING OBJECTS === */

/* Base State: Hidden & Pushed Down */
.reveal-up {
    opacity: 0;
    transform: translateY(60px);
    /* Rise distance */
    transition:
        opacity 1.2s cubic-bezier(0.2, 0.8, 0.2, 1),
        transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity, transform;
}

/* Base State: Slide from Side */
.reveal-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: all 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-right {
    opacity: 0;
    transform: translateX(60px);
    transition: all 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Active State: Visible & Reset Position */
.reveal-active {
    opacity: 1 !important;
    transform: translate(0, 0) !important;
}

/* Delays */
.delay-100 {
    transition-delay: 0.1s;
}

.delay-200 {
    transition-delay: 0.2s;
}

.delay-300 {
    transition-delay: 0.3s;
}

.delay-400 {
    transition-delay: 0.4s;
}

/* Accessibility Override */
@media (prefers-reduced-motion: reduce) {

    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}